JPH0314940U

JPH0314940U -

Info

Publication number: JPH0314940U
Application number: JP7586489U
Authority: JP
Priority date: 1989-06-28
Filing date: 1989-06-28
Publication date: 1991-02-14

Description

[Brief explanation of drawings]

第１図は、本考案の第１実施例を示す発塵防止
型電動機の要部断面図、第２図は、本考案の第２
実施例を示す発塵防止型電動機の要部断面図、第
３図は、先に提案されている発塵防止型電動機の
上半部を断面で示した側面図、第４図は、第３図
中より流体シール機構のみを取り出して示した断
面図、第５図は、上記第３図の発塵防止型電動機
の正面図、第６図は、上記第３図の発塵防止型電
動機の斜視図、第７図は、上記第３図の発塵防止
型電動機の濾過部材の取付態様を示す要部断面図
である。１……ケース、２……電動機、３……流体シー
ル機構、４……濾過部材、６……出力軸挿通孔、
７……端板、７ａ，７ｂ……連通孔、８，８Ａ…
…濾過部材取付孔、１０……出力軸、１１ａ，１
１ｂ……磁性流体、２２……支持部材、２３……
第１の密閉部材、２４……第２の密閉部材。 FIG. 1 is a cross-sectional view of the main parts of a dust prevention type electric motor showing the first embodiment of the present invention, and FIG.
FIG. 3 is a cross-sectional view of the main part of a dust prevention type electric motor showing an example, and FIG. FIG. 5 is a front view of the dust prevention type motor shown in FIG. 3 above, and FIG. 6 is a cross-sectional view showing only the fluid seal mechanism taken out from the figure. The perspective view, FIG. 7, is a sectional view of a main part showing how the filter member of the dust generation prevention type electric motor shown in FIG. 3 is attached. DESCRIPTION OF SYMBOLS 1...Case, 2...Electric motor, 3...Fluid seal mechanism, 4...Filtering member, 6...Output shaft insertion hole,
7... End plate, 7a, 7b... Communication hole, 8, 8A...
...Filtering member mounting hole, 10...Output shaft, 11a, 1
1b...Magnetic fluid, 22...Supporting member, 23...
a first sealing member, 24...a second sealing member;

Claims

[Scope of Claim for Utility Model Registration] (1) A case having an output shaft insertion hole and a filtration member mounting hole, and an electric motor section housed in the case with the output shaft inserted through the output shaft insertion hole to the outside; A fluid sealing mechanism that seals the gap between the case and the motor output shaft in the output shaft insertion hole with a magnetic fluid, and a fluid seal mechanism that is attached to the filtration member mounting hole and that allows air to pass through but prevents dust of a certain size or more. What is claimed is: 1. A dust generation prevention electric motor equipped with a filtration member that blocks permeation, characterized in that the dust generation prevention type electric motor has an attachment mechanism that detachably attaches the filtration member to a filtration member attachment hole of the case. (2) The mounting mechanism includes a support member that can be screwed into the case and holds the filter member in cooperation with the case, and a first sealing member that seals between the case and the filter member; The dust-preventing electric motor according to claim 1, further comprising a second sealing member that seals between the case and the support member.